Send graduated invoice payment reminders automatically by email

Checks your invoice tracker daily and emails the right reminder based on how overdue each invoice is.

How the work actually flows

It branches. Exactly one path is taken; runs once per each overdue invoice.

Pattern: Exclusive Choice (4) · Simple Merge (5) · Multiple Instances without Synchronization (12)

flowchart TD trig(["every morning schedule check"]):::trigtime s0[["Check tracker for overdue invoices"]]:::mi s1["Calculate days overdue"]:::task s2["Reminder email sent"]:::svc s3[("Tracker updated")]:::store trig --> s0 s0 --> s1 s2 --> s3 gx{"× how many days overdue"}:::gate s1 --> gx p00["Send friendly reminder"]:::task gx -->|"Slightly overdue"| p00 p10["Send urgent reminder"]:::task gx -->|"Moderately overdue"| p10 p20["Send final notice"]:::task gx -->|"Severely overdue"| p20 jn{"○ before updating tracker"}:::gate p00 --> jn p10 --> jn p20 --> jn jn --> s2 out[/"Reminder email sent tracker updated"/]:::out pay{{"Consistent follow-up on late payments"}}:::pay s3 --> out out --> pay classDef task fill:#e7f6fe,stroke:#34b8f0,color:#2c2a29 classDef svc fill:#f6f8fa,stroke:#7c8795,color:#2c2a29 classDef mi fill:#e7f6fe,stroke:#0079a8,color:#2c2a29,stroke-width:2px classDef human fill:#fff,stroke:#0079a8,color:#0079a8 classDef store fill:#f6f8fa,stroke:#0079a8,color:#2c2a29 classDef trig fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigtime fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigdata fill:#8ad4f5,stroke:#0079a8,color:#06314c,font-weight:bold classDef gate fill:#fff,stroke:#e8a23d,color:#6b4708,font-weight:bold classDef out fill:#1f9d6b,stroke:#167a53,color:#fff,font-weight:bold classDef pay fill:#06314c,stroke:#021f33,color:#fff
Starts itA stepAn outside serviceRuns once per itemA record or sheetOne path onlyPaths rejoinResultPayoff
Build size
Standard

A mid-size build with several tools working together.

Business functions
Email AutomationImage & Media ProcessingSpreadsheet & Database OpsScheduling & CalendarFinance & Accounting
Connects
Google SheetsGmail
Featured in

The problem it solves

Chasing late payments is awkward and easy to put off, so overdue invoices sit unpaid longer than they should. Remembering who to follow up with, and how firmly, takes mental energy you would rather spend elsewhere.

Who it fits

A freelancer, consultant, or small business that invoices clients and wants consistent follow-up on late payments.

How it works

  1. Every morning, the system checks your invoice tracker for overdue invoices
  2. It calculates exactly how many days overdue each one is
  3. A friendly, urgent, or final notice email is chosen based on that number
  4. The reminder is sent, and the spreadsheet is updated with the date and reminder count
What you get

Overdue invoices chased without awkward phone calls

Late-paying clients receive the right reminder at the right moment, so you keep getting paid without having to nag anyone yourself.

What you get

An automatically sent reminder email for every overdue invoice, with your tracker kept up to date.

What you need

A Google Sheets account and a Gmail account with sending access.

We can build this. But should you?

The hard question is not how to build it. It is whether this is the right thing to build first.

That is what a Fractional Chief AI Officer figures out with you, before anyone writes a line of code.

Let's Talk Strategy

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